Title: Adaptability evaluation of numerical simulation accuracy of groundwater based on sensitivity analysis
Abstract: In order to satisfactorily depict the dependence of simulation accuracy of mathematical models on the initial parameters and to avoid the non-standardization of water levels,the Nash-Sutcliffe efficiency coefficient Ens and average relative error Emr were taken as the evaluation indexes for evaluation of the adaptability of numerical simulation accuracy.Based on the Morris method,adaptability evaluation and sensitivity analysis of time series were performed on the parameters K and μ for the numerical simulation of groundwater.The results show that there are differences in the optimum parameters obtained using different adaptability indexes.Different initial parameters have significant influences on the results of the sensitivity analysis and the time series analysis.The parameter sensitivity is lesser at the initial stage of model operation,and with the increase of drawdown of the calculated water levels it exhibits an increasing tendency.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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